There are four patches added to i915 from Ubuntu-5.3.0-45.37 to Ubuntu-5.3.0-46.38, like in https://people.canonical.com/~alexhung/LP1873179/patches/
I built four kernels, each with one patch removed: https://people.canonical.com/~alexhung/LP1873179/ For example, p-1 = Ubuntu-5.3.0-46.38 with Revert "drm/i915: Schedue request retirement in execlists_user_end()" p-2 = p-1 with Revert "drm/i915/userptr: fix size calculation" p-3 = p-2 ... p-all = p3 ... Let us know which one caused your problem and we can discuss further. If a patch is identified, I am also interested in knowing whether focal kernel (based on 5.4) is able to solve your problem. If so, we can investigate where we can backport anything from 5.4 to 5.3. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873179 Title: i915 bug: ZOOM messenger is very slow w/ kernel 5.3.0-46 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873179/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
